iTunes won't let me drag a playlist to my iphone. Why not?
iTunes on my Mac Pro won't let me drag a playlist to my iPhone 4s. Why not? I do it all the time from my MacBook Pro.
Mac Pro, Mac OS X (10.7.4), 2.66 GHz Quad-core; 6 GB DDR3
Is there enough capacity? On the summary page for your iPhone in iTunes is "Manually manage audio and video" (located in the options section at the bottom) checked or unchecked;
